Composition of matter for curing punctures in pneumatic tires.



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GUSTAV FUENFSTUECK, 0F DENVER, COLORADO, ASSIGNOR TO THE S. & H. SUPPLYAND MACHINERY COMPANY, OF DENVIEIIR, COLORADO, A CORPORATION OF COLO-RADO.

COMPOSITION OF MATTER FOR CUlilNGr PUNCTURES IN PNEUMATIC TIRES.

' No Drawing;

To all whom it may concern:

Be it known that I, GUSTAV FUENFSTUECK, a subject of the Emperor ofGermany, residing in the city and county of Denver and State ofColorado, have invented certain new and useful Improvements invCompositions of Matter'for Curing Punctures in Pneumatic Tires; and Ido declare the following to be a full, clear, and exact description ofthe invention, such as will enable others skilled in the art to which itappertains to make and use the. same.

My invention relates to a composition of matter for use to curepunctures in the pneumatic tiresof vehicle Wheels, This composition ofmatter, consists of a liquid containing floating bodies of suitablesubstance, the floating material being of the same specific gravity asthe liquid, in which, it is carried in suspension, the entire volume ofliquid being in a homogeneous condition, that is to say, with thefloating solid substance "disscminated therethrough.

In the use of the composition of matter, it is introduced into the innertube of the pneumatic tire, after which, the wheel is rotated, and thematerial automatically closes the puncture, the closure being permanent.In order to obtain these results, the liquid containing the floatingsolid bodies must not destroy the rubber; it must not plug up the valvethrough which it islinserted; it must harden when brought in contactwith the atmosphere; it must adhere to the rubber in r closingthepuncture: it must not freeze under ordinary temperature; its puncturecuring properties must not be destroyed by heat; it must not spoil in aclosed vessel; it must not be dangerous to handle, or of an explosivecharacter. My improved composition of matter possesses all of theforegoing properties in the highestdegree.

' My improved composition of matter is composed of water, dextrin,alcohol, calcium chlorid, glycerin, and bran,-or the outer coat offarinaceous grain, being'the husky portion of ground wheat, forinstance, separated from the Hour by bolting. So far as my experimentsand demonstrations have determined, Wheat bran gives the best results.The invention, however, is not limited to this Specification of LettersPatent.

binder for the various ingredients.

Patented Aug. 19,1913.

Application filed January 24, 1912. Serial No. 673,093.

tions'will give good results:

Water; 4 pounds. Dextrin 2 pounds. Alcohol 1 pound. Calcium chloridu' Q;pound. Glycerin pound. 1 Bran 1 pound.

' The puncture material composed-of these ingredients, is compounded inthe following manner: The dextrin is mixed with half of the water in onereceptaclefthe calcium chlorid .and glycerin are then mixed with theother half of the Water in another rcceptacle,'t he two mixtures arethen put together. and the bran added, after which, the

mass is agitated, and the alcohol finally applied. It is then allowed tostand in a closed vessel. In this manner a heavy flowing liquid, throughwhich-the bran is evenly disseminated, is formed. The bran, beforemixing it with the other ingredients, is

a more fine than its ordinary condition when separated from the flour,during the manufacture of the latter from wheat, for instance. Thecalcium chlorid raises the specific gravity of the water andotheringredients in liquid form, making the same sufficiently heavy to holdthe bran, or other similar substance, in suspension. The calcium chloridalso prevents the freezing of the compound at ordinary temperatures. Thealcohol also gives an anti-freezing quality to the material, and at thesame time preserves it. The dextrin forms a sort of The glycerin may bedispensed with, though its use is preferred.

-While a substance composed of the foregoing ingredients performs thepuncture curing function, in most satisfactory manner, it is believedthat other substances of similar consistency and analogous qualities'maybe round or reduced to a condition somewhat inner tube of a pneumatictire, through the valve tube of the same byemploying air pressure, thepressure being applied to the liquid ina vessel, the latter beingconnected by means of a suitable conduit with the check valve of thetire. In order to use the tube for this purpose, the check Valve must beremoved and afterward replaced, after which, the tire may be inflated inthe usual manner. About one pint of the material should be placed ineach tire of ordinary size. After; this is done, the wheel containingthe tire is rotated, and the centrifugal force serves to throw thepuncture curing substance into position to .act effectually for thepurpose stated.

Before applying the bran and dextrin, or mixing them with the otheringredients, the material should be screened, in order to thoroughly.separate the particles, and place them in condition to unite with otherelements to the best possible advantage.

Attention is called to the fact .that the compound is introduced to thetire without removing the latter from the wheel, and the latter maytherefore be immediately rotated for the purpose ofcuring the puncture.

Having thus described my invention, What I claim is:

1. The herein described composition of matter, composed of water,dextrin, alcohol, calcium chlorid, glycerin and bran, combined insuitable proportions, substantially as described.

2. A puncture-curing compound including in its composition Water,dextrin, bran, and a suflicient quantity of a comparatively heavy liquidto make the specific gravity of the entire compound equal to that ofbran,

alone.

3. The herein described composition of matter composed of water,dextrin, alcohol, calcium chlorid and bran combined in suitableproportions, substantially as described.

4. The herein described puncture-curing compound including in itscomposition Water, dextrin, calcium chlorid, bran, and a liquid having alow freezing point, combined in suitable proportions.

